@Lucuis , when creating a new season, you need to add at least one class to it to before clicking the Create button will work. There is a known issue that the Create season screen does not warn you when this happens.

If you created a new season with the same year that already exists, it will overwrite the existing season with the new one.

If nothing is happening when you click the save button on a season, perhaps there is a javascript error. To determine this, open up developer tools.

In google chrome, do the following.

Go to your season that you can't click the save button.

OSX - Shift + Command + i
Windows - Shift + Ctrl + i

Then click the Console label on the top of the new panel that is displayed.
Now, reload/refresh the page (Ctrl + R or Command + R)